You're saying those photos are real? Don't 'insult my intelligence'. [=don't treat me as though I am stupid; don't expect me to believe those photos are real]
Most people were forced to work longer hours each week, and to 'add insult to injury', the company decided not to give pay raises.
They're understandably 'insulted' when no one asks for their opinion on a matter that affects them so much.
(..) that I'm not a marrying man. No, I haven't forgotten. You're not worth $. You'll never mean anything but misery to any man. Go on, insult me. I don't care what you say, only give me the money. I won't let Tara go. I can't let it go while there's a breath left in my body. Oh, Rhett. (..)1939 Gone with the Wind
(..) And you, Miss, are no lady. Don't think I hold that against you. Ladies have never held any charm for me. First you take a low, common advantage of me, then you insult me. I meant it as a compliment and I hope to see more of you... ...when you're free of the spell of the elegant Mr. Wilkes. (..)1939 Gone with the Wind